在法医学关于损伤与疾病的关系问题上 ,有一类涉及对称性器官对侧原有残疾或损伤 ,本次健侧器官受损 ,如何评定伤残的问题。本文结合两案例予以讨论。案例一 :陈某 ,男 ,38岁。双眼患蚕蚀性角膜溃疡。 1996年 ,右眼因蚕蚀性角膜溃疡而予摘除 ,左眼亦因该病两次行角膜病灶切除术 In the forensic science on the relationship between injury and disease, there is a class involving the opposite side of the original symmetry of the original disability or injury, the contralateral organ damage, how to assess the problem of disability. This article combines two cases to be discussed. Case 1: Chen, male, 38 years old. Eyes suffering from corneal ulcer. In 1996, the right eye due to Mooren ulcer was removed, the left eye also due to the disease twice corneal focal resection